actually this is a not quite right. a topspin ball which only just clears the net will land short (bad length) meaning that the ball is weak.
The ball doesn't have to land short. Just hit with less spin for a flatter trajectory. One doesn't make the same stroke for every ball. I have a location that I want to hit and try to put just enough spin to get there as flat as possible.
a deep topspin landing on the end line will probably clear the net by at least 12 inches.
That is way too high and the ball will bounce high and take too long to land. I wait for balls like that to counter hit them.
The good news is that if you correct this part of your technique your level is going to improve a lot also your idea about the flight and reaction time iis incorrect.
Balls should land withing 100m or about 4 inches from the edge of the table. They should not go over the net more that 4 inches to minimize flight time. Short spinny loops are good for hitting the side edges at angles.
My technique is limited by age.
In fact when the ball lands deep its more effective because it tends t push opponent back whereas a short topspin is very easy to attack by moving weight forward
Most of my opponents don't move back. They will block if they can. The same goes with me.
We go for angles and pockets when possible.
I agree it is best to keep the balls deep when not hit at an angle but the ball should not bounce high.
They will block if they can.
Here is a video I made about a year ago now. I made it in support of the c-pen players. I usually don't play c-pen but the camera angle is very good so it is easy to see the arc of the ball and how the ball clears the net.
I am on the far side of the table. My style doesn't change much when playing shake hands.
https://bit.ly/2AWR2Q3
Yes, some of my balls have too much arc.
The comment I made about scooping instead of looping is a common mistake I see people make where the motion is forward first then up.
My FH rubber is Rakza 7 Soft Max and my BH rubber is LKT Pro XP top sheet that I glued to a 1.5 or 1.8mm HRS sponge I got from zeropong. Nothing fancy.